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A certain region of soap bubble reflects red light of wavelength 650nm in vaccum.What is the minmimum thickness that this region of the bubble could have?Take μ=1.41
ans : 0.35x10-6 meters
{formula is 2ud=(n+1/2)xwave length} take n=1 because minimum thickness we need
But the answer is 1.2 * 10^(-7) m
Your ans is wrong @ renu
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